Trimanganese Tetraoxide (Mn3O4) Powder from Japan
Mn3O4, or trimanganese tetraoxide, used in ferrites for magnetic applications and as a sintering aid. Classified under HTS 2820.90.00.00 as other manganese oxides, a mixed-valence inorganic compound in Chapter 28. Provides magnetic properties in soft ferrites.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%
Import Tips
• Include valence state analysis in specs to differentiate from MnO2 and support oxide classification
• For ferrite production, note end-use but ensure pure form to stay in 2820; mixtures go to 3824
• Monitor for Section VI note 1 restrictions if resembling Section XV metal alloys